I would go with the OS 46 ax ...You can up size later to the 55 as it has the same footprint...If you are just getting back in the OS46 ax will have plenty of power...Thats the plane and motor combo I restarted with and it was perfect....The Tiger 2 is a real nice kit and a nice flying plane..Dont be surprized if it comes out tail heavy...They have long tails and tend to build that way. Just watch you dont build any extra weight into the tail if you can help it...